Super-charging and fast-charging dual-purpose charging power cabinet and charging system

Abstract

The application discloses a super-charging and fast-charging dual-purpose charging power cabinet and a charging system. The charging power cabinet is suitable for being connected with a plurality of charging terminals. At least one super-charging terminal is included in the plurality of charging terminals, and the rest are fast-charging terminals. The charging power cabinet comprises a power supply module, a power distribution module and a charging control module. The power distribution module comprises output buses consistent with the number of power supply units in the power supply module and a plurality of switches. Each fast-charging terminal is connected with an output bus, and the output bus is a fast-charging bus. Each super-charging terminal is connected with two output buses, and the two output buses are super-charging buses. According to the bit sequence of all output buses, the two super-charging buses connected with the same super-charging terminal do not include other super-charging buses, and the two super-charging buses have at least two output buses according to the positive counting of the bit sequence. The charging power cabinet can improve the interference between fast-charging and super-charging in the prior art.

Description

Technical Field

[0001] This invention relates to the field of charging system technology, specifically to a dual-purpose supercharging and fast charging power cabinet and charging system. Background Technology

[0002] With the development of the new energy vehicle industry, the battery capacity and charging rate of existing electric vehicles are gradually increasing, and the required power consumption is also increasing. Therefore, existing public charging stations are equipped not only with fast charging but also with higher-power supercharging. Previously, high-power charging systems generally only included relatively low-power fast charging terminals. Power allocation involved concentrating multiple power supply units onto a single charging gun to expand the charging power of that single gun and meet the vehicle's power needs. This type of charging system often uses a full-matrix or full-ring topology for power allocation, requiring a large number of DC switches, resulting in high hardware costs, numerous switching lines, and complex control logic. Furthermore, when this topology is applied to charging stations that have both fast and supercharging capabilities, interference can occur between the fast and supercharging guns, preventing the supercharging system from allocating sufficient charging power and thus failing to meet the charging needs of the corresponding vehicles. Summary of the Invention

[0003] The purpose of this invention is to overcome the above-mentioned defects or problems in the prior art and to provide a dual-purpose charging power cabinet and charging system for both supercharging and fast charging. This charging power cabinet can improve the situation where fast charging and supercharging interfere with each other in the prior art.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] Technical Solution 1: A dual-purpose supercharging and fast charging power cabinet, suitable for connection to multiple charging terminals, including at least one supercharging terminal and the rest fast charging terminals; it includes: a power supply module, a power distribution module, and a charging control module; the power supply module includes multiple power supply units connected to the power distribution module; the power distribution module includes an output bus with the same number as the power supply units and several switches; each output bus is correspondingly connected to each power supply unit, and the output bus is suitable for connection to the charging terminal; the output buses are connected in series through a first switch to form a ring topology, and when the number of output buses is even, they are connected through a second switch. A third switch controls the output bus to connect to the corresponding charging terminal. The charging control module controls the opening and closing of each switch according to the power demand of the charging terminal to allocate the required power to the charging terminal. Each fast charging terminal is connected to one output bus, which is a fast charging bus. Each supercharging terminal is connected to two output buses, which are both supercharging buses. According to the position sequence of all output buses, there are no other supercharging buses between the two supercharging buses connected to the same supercharging terminal, and the two supercharging buses have at least two output buses when counted in the forward position sequence.

[0006] Technical solution two is based on technical solution one: among the two output buses adjacent to any of the supercharging buses, at least one output bus is not connected to any of the charging terminals, and this output bus is a disconnected bus.

[0007] Technical solution three, which is based on technical solution two, also includes at least one fourth switch; among all output buses, those that are separated from any supercharge bus or disconnect bus by at least one first switch and are not connected through a second switch are all connected to any supercharge bus or disconnect bus through the fourth switch.

[0008] Technical solution four is based on technical solution three: two supercharging buses connected to the same supercharging terminal are grouped together, and when the power distribution module includes multiple groups of supercharging buses, each supercharging bus is connected to at least one of the fourth switches.

[0009] Technical solution five is based on technical solution four: In the power supply module, the number of power supply units is N, where N≥a+b*4, a is the number of fast charging terminals, and b is the number of supercharging terminals.

[0010] Technical solution six, which is based on technical solution five, has 12 power supply units and 9 charging terminals, including 1 supercharging terminal and 8 fast charging terminals.

[0011] Technical solution seven is based on technical solution six: in the bit sequence of all output buses, the bit sequence of the supercharging bus is 1st and 5th, the bit sequence of the disconnect bus is 2nd and 4th, and the bit sequence of the fourth switch is the output bus with the bit sequence of 1st and 9th.

[0012] In addition, the present invention also provides a technical solution eight: a charging system comprising: a plurality of charging terminals, including at least one supercharging terminal and the rest being fast charging terminals; and a dual-purpose supercharging and fast charging power cabinet as described in any one of technical solutions one to seven, which is connected to each of the charging terminals.

[0013] Technical solution nine is based on technical solution eight: each charging terminal includes at least one charging gun, and the charging guns include supercharging guns and fast charging guns according to different charging power, with the rated charging power of the supercharging gun being greater than that of the fast charging gun; the supercharging terminal includes only one supercharging gun, and the fast charging terminal includes at least one fast charging gun.

[0014] Technical solution ten is based on technical solution nine: each of the charging guns is equipped with an identification unit, which is used to identify the power required by the device to be charged and transmit it to the charging control module so that it can adjust the power required by the corresponding charging terminal.

[0015] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0016] Technical solution one provides a dual-purpose supercharging and fast charging power cabinet, which is used to power charging terminals. The charging terminals may include supercharging terminals and fast charging terminals. The power of the supercharging terminal is greater than that of the fast charging terminal, which can provide a faster charging speed.

[0017] The charging power cabinet includes a power supply module, a power distribution module, and a charging control module. The power supply module includes multiple power supply units, which are connected to the power distribution module and then connected to the charging terminal through the power distribution module, thereby providing charging power to the charging terminal.

[0018] The power distribution module includes several output buses and switches. Each power supply unit is connected to one output bus, which in turn connects to a charging terminal. Depending on the type of charging terminal, the output buses are divided into supercharging buses and fast charging buses. For each supercharging terminal, there are two supercharging buses; for each fast charging terminal, there is one fast charging bus. Without power allocation, each output bus will only charge the device at the output power of its connected power supply unit. Simultaneously, a first switch is placed between the output buses to form a ring topology, and a second switch is placed to connect power supply units at opposite corners. This star-ring topology allows each charging terminal to allocate charging power from other idle power supply units during charging, achieving higher charging power. Furthermore, compared to a full-ring or full-rectangular topology, this structure reduces the number of switches, lowers hardware costs, reduces the number of switching lines, and lowers the complexity of the control logic.

[0019] In this configuration, according to the bit sequence of all output buses, there are no other supercharging buses between the two supercharging buses connecting the same supercharging terminal, and the two supercharging buses, counting forward according to their bit sequence, have at least two more output buses. This allows each supercharging bus to allocate power from its two nearest adjacent output buses according to their bit sequence, ensuring that the supercharging buses do not interfere with each other when allocating power. Simultaneously, when the supercharging terminal and some fast-charging terminals are in use, the remaining power supply units that are not currently supplying power can, if conditions permit, allocate charging power to the supercharging terminal or fast-charging terminal in use, avoiding interference between the supercharging terminal and the fast-charging terminal that would prevent the supercharging terminal from receiving sufficient charging power.

[0020] The charging control module can turn all switches on and off according to the preset power distribution rules, flexibly schedule each power supply unit, and adjust the power distribution method in a flexible and variable manner, ensuring a stable and safe charging process.

[0021] In technical solution two, among the two output buses adjacent to any of the supercharging buses, at least one output bus is not connected to any of the charging terminals; this output bus is a disconnect bus. By setting up a disconnect bus, the power of the corresponding power supply unit is not directly output to the charging terminal, but is instead provided to other charging terminals through power allocation. This ensures that even when all charging terminals are occupied, the charging power of the power supply unit corresponding to the disconnect bus remains unused. Furthermore, setting the disconnect bus adjacent to the supercharging bus guarantees that the output power of the disconnect bus can be quickly and conveniently provided to the supercharging terminal, ensuring high power output from the supercharging terminal.

[0022] In technical solution three, all output buses that are separated from any supercharging bus or disconnected bus by at least one first switch and are not connected via a second switch are connected to any supercharging bus or disconnected bus via the fourth switch. Without the fourth switch, even if the corresponding charging terminal for some output buses is not occupied (i.e., the corresponding power supply unit is idle), power cannot be allocated to the charging terminals corresponding to those non-directly connected output buses when the charging terminals corresponding to those other output buses are occupied. Priority must be given to power allocation to supercharging terminals; therefore, the fourth switch is provided to connect specific output buses to the supercharging bus or disconnected bus. Since the disconnected bus has no directly connected charging terminal, power can be successfully allocated to the supercharging bus even through the disconnected bus.

[0023] This allows for full-matrix power switching of the supercharging terminal. This means that as long as the charging terminal corresponding to any power supply unit is not occupied, the idle power supply unit can be directly called to the supercharging terminal via the first, second, and fourth switches. Of course, implementing full-matrix power switching of the supercharging terminal is not difficult if cost allows; in extreme cases, simply setting up enough switches to directly connect the supercharging bus to other output buses would suffice. However, this clearly contradicts cost constraints.

[0024] It is worth noting that because Technical Solution 1 employs a configuration where there are at least two output buses between the two supercharging buses, the first switch connected to these two supercharging buses can connect to as many other non-overlapping output buses as possible, thus achieving more efficient utilization of the first switch connected to these two supercharging buses. As a result, compared to solutions where the two supercharging buses are adjacent in sequence or have only one output bus between them, Technical Solution 1 requires fewer fourth switches to achieve full matrix power switching for the supercharging terminal. Technical Solution 2 further incorporates a disconnect bus configuration, further reducing the number of output buses that need to be connected to the supercharging buses via a fourth switch. This allows Technical Solution 3 to achieve full matrix power switching for the supercharging terminal using as few fourth switches as possible.

[0025] In technical solution four, when the power distribution module includes multiple sets of supercharging buses, each supercharging bus is connected to at least one of the fourth switches. This ensures that even with multiple sets of supercharging buses, at least one supercharging bus in each set can allocate power to other output buses via the fourth switch.

[0026] In technical solution eight, the charging system adopts the supercharging and fast charging dual-purpose charging power cabinet of the above technical solution. It can use the charging power cabinet to realize the balanced configuration of supercharging terminals and fast charging terminals and the flexible allocation of output power, so that the power of the available output bus can be smoothly allocated to the supercharging bus to meet the charging needs of the device to be charged. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the charging system provided in Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the charging system provided in Embodiment 2 of the present invention;

[0030] Figure 3 This is a schematic diagram of the charging system provided in Embodiment 3 of the present invention;

[0031] Figure 4 This is a schematic diagram of the charging system provided in Embodiment 4 of the present invention.

[0032] Explanation of key figure labels:

[0033] Charging terminal 1;

[0034] Power supply module 2; Power supply unit 21;

[0035] Power distribution module 3; output bus 30; first switch 31; second switch 32; third switch 33; fourth switch 34. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] In the claims, description, and accompanying drawings of this invention, unless otherwise expressly specified, the terms "first," "second," or "third," etc., are used to distinguish different objects, not to describe a specific order. In the claims, description, and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are intended to mean "including but not limited to." Example 1:

[0038] Embodiment 1 of the present invention provides a charging system, which includes a plurality of charging terminals 1 and a dual-purpose supercharging and fast charging power cabinet.

[0039] In this charging system, at least one of the charging terminals 1 is a supercharging terminal, and the rest are fast charging terminals. Each charging terminal 1 includes at least one charging gun, which is divided into supercharging guns and fast charging guns according to different charging power. The rated charging power of the supercharging gun is greater than that of the fast charging gun. The supercharging terminal includes only one supercharging gun; the fast charging terminal includes at least one fast charging gun. Each charging gun is equipped with an identification unit, which is used to identify the power required by the device to be charged and transmit it to the charging power cabinet so that it can allocate the charging power required by the corresponding charging terminal 1.

[0040] Specifically, the difference between supercharging terminals and fast charging terminals lies in the rated charging power they can provide to the devices being charged. For example, fast charging terminals typically provide a rated charging power between 30kW and 100kW, while supercharging terminals can provide a rated charging power of over 120kW. Supercharging terminals can provide faster charging speeds for eligible devices. To ensure sufficient charging power, supercharging terminals use only one supercharging gun; while fast charging terminals, due to their lower charging power, can use multiple fast charging guns to charge more devices simultaneously.

[0041] Reference Figure 1 In Example 1, a total of 9 charging terminals 1 are provided, including one supercharging terminal S1 and 8 fast charging terminals P1 to P8.

[0042] In this charging system, the dual-purpose supercharging and fast charging power cabinet is suitable for connection to multiple charging terminals 1. It includes a power supply module 2, a power distribution module 3, and a charging control module. The power supply module 2 includes multiple power supply units 21 connected to the power distribution module 3. The power distribution module 3 includes output buses 30, the same number as the power supply units 21, and several switches. Each output bus 30 is connected to a corresponding power supply unit 21 and is suitable for connection to a charging terminal 1. The output buses 30 are connected in series via a first switch 31 to form a ring topology. When the number of output buses 30 is even, a second switch 32 connects to another output bus 30 diagonally opposite to it. Simultaneously, a third switch 33 controls the output bus 30 to connect to the corresponding charging terminal 1. Terminal 1; The charging control module controls the opening and closing of each switch according to the power demand of the charging terminal 1, so as to allocate the required power to the charging terminal 1; wherein, each fast charging terminal is connected to an output bus 30, which is a fast charging bus; each supercharging terminal is connected to two output buses 30, which are both supercharging buses; and, according to the position sequence of all output buses 30, the two supercharging buses connected to the same supercharging terminal do not include other supercharging buses, and the two supercharging buses have at least two output buses 30 in the forward position, and the two output buses 30 are not connected to the supercharging terminal.

[0043] In power supply module 2, the number of power supply units 21 is N, where N ≥ a + b * 4, a is the number of fast charging terminals, and b is the number of supercharging terminals. Preferably, N is greater than or equal to 10. (Refer to...) Figure 1 In this embodiment, the power supply module 2 includes 12 power supply units 21, namely M1 to M12. The rated power of each power supply unit 21 is 40kW, and the total power of the power supply module 2 is 480kW. Each power supply unit 21 is connected to the power distribution module 3.

[0044] The power distribution module 3 includes 12 output buses 30, numbered L1 to L12. One end of each output bus 30 is connected to a power supply unit 21, and the other end is adapted to connect to the charging terminal 1. For fast charging terminals, one output bus 30 is connected; for supercharging terminals, two output buses 30 are connected.

[0045] The power distribution module 3 also includes several switches, including a third switch 33 on each output bus 30 that connects the corresponding power supply module 2 and charging terminal 1. The third switch 33 controls the connection and disconnection of the charging path between the power supply module 2 and the corresponding charging terminal 1. Furthermore, a first switch 31 is provided between adjacent output buses 30, connecting the output buses 30 in series to form a ring topology circuit structure. Simultaneously, when the number of output buses 30 is even, a second switch 32 connects to another output bus 30 diagonally opposite it. Here, "diagonal" refers to the two output buses 30 with corresponding serial numbers in the ring topology circuit structure formed by these output buses 30. For example, in... Figure 1 In this configuration, the total number of power supply modules 2 is 12, with M1 corresponding to M7, M2 to M8, and so on, so that all output buses 30 are connected via a second switch 32. Without power allocation, each output bus 30 will only charge the device to be charged using the output power of its connected power supply unit 21. Simultaneously, by setting a first switch 31 between each output bus 30 to form a ring topology, and setting a second switch 32 to connect power supply units 21 at diagonal positions, a star-ring topology is formed. This allows each charging terminal 1 to allocate charging power from other idle power supply units 21 during charging, achieving higher charging power. Furthermore, compared to a full ring or full rectangular topology, this topology reduces the number of switches, lowers hardware costs, reduces the number of switching lines, and lowers the complexity of the control logic.

[0046] The charging control module can control the opening and closing of each switch according to the power demand identified by the identification unit on the charging terminal 1, so as to allocate the required power to the charging terminal 1.

[0047] It is worth noting that, in describing the connection relationship between each output bus and each switch, each power supply unit and each charging terminal, the terms "connection" and "direct connection" used in this invention, unless otherwise specified, all refer to "direct connection" and do not include connection methods that cross multiple output buses to achieve indirect connection.

[0048] In this embodiment, the output bus 30 connecting the fast charging terminal is a fast charging bus, for example... Figure 1 L3, L4 to L12; the output bus 30 connecting the supercharging terminal is the supercharging bus, for example... Figure 1 L1 and L5 in the diagram. (Refer to...) Figure 1In this embodiment, only one supercharging terminal is included. Among the output buses 30 connected to this supercharging terminal, only one fast charging bus is included. No other supercharging buses are set. In accordance with the position sequence, that is, the order of L1 to L12, counting in a positive direction, there are also three output buses 30, L2, L3, and L4, between L1 and L5. In this way, each supercharging bus can allocate the power of the two adjacent output buses 30 according to the position sequence, ensuring that the supercharging buses do not interfere with each other when allocating power. At the same time, when the supercharging terminal and some fast charging terminals are in use, the remaining power supply units 21 that are not supplying power can allocate the charging power to the supercharging terminal or fast charging terminal that is in use, when conditions permit, to avoid the supercharging terminal and fast charging terminal interfering with each other and causing the supercharging terminal to be unable to allocate sufficient charging power.

[0049] Furthermore, among the two output buses 30 adjacent to any supercharging bus, at least one output bus 30 is not connected to any charging terminal 1; this output bus 30 is a disconnected bus. (Refer to...) Figure 1 Two supercharging buses, L1 and L5, are connected to the S1 supercharging terminal. The output bus 30 closest to L1 is L2, and the output buses 30 closest to L5 are L4 and L6. Output bus 30 L4 is selected, and neither L2 nor L4 is connected to any charging terminal 1. Simultaneously, L3 is connected to the P1 fast charging terminal. Clearly, only the output buses 30 connected to charging terminal 1 can directly charge the device to be charged via the power supply module 2. Disconnected buses, not connected to charging terminal 1, cannot directly charge the device and must be routed to other output buses 30 via the first switch 31 before being output to the corresponding charging terminal 1. By setting up a disconnect bus, the power of the corresponding power supply unit 21 is not directly output to the charging terminal 1, but is provided to other charging terminals 1 through power allocation. In this way, even if all charging terminals 1 are occupied, there is still a situation where the charging power of the power supply unit 21 corresponding to the disconnect bus is unused. At the same time, setting the disconnect bus to be adjacent to the supercharging bus can ensure that the output power of the disconnect bus can be provided to the supercharging terminal nearby, ensuring the high power output of the supercharging terminal.

[0050] Furthermore, the power distribution module 3 includes a fourth switch 34 among its switches. In the power distribution module 3, at least one fourth switch 34 is included; in all output buses 30, those separated from any overcharge bus or disconnect bus by at least one first switch 31 and not connected via a second switch 32 are all connected to any overcharge bus or disconnect bus via the fourth switch 34. (Refer to...) Figure 1The schematic diagram of the charging power cabinet includes a fourth switch 34, which connects output buses 30 L1 and L9. L1 is the supercharging bus connected to the supercharging terminal, while L9 and L5 are separated by three first switches 31, and are not connected to L1, L2, L4, or L5 via second switches 32. Of course, L9 can also be connected to L2, L4, or L5 via the fourth switch 34, as long as the above requirements are met. Without the fourth switch 34, even if the corresponding charging terminal 1 of some output buses 30 is not occupied, power cannot be allocated to other charging terminals 1 when the corresponding charging terminals of those output buses 30 are occupied, because power allocation requires other output buses 30. Priority should be given to power allocation to supercharging terminals; therefore, the fourth switch 34 is provided to connect specific output buses 30 to the supercharging bus or the disconnect bus. Since the disconnect bus does not have a directly connected charging terminal 1, power can be successfully allocated to the supercharging bus through the disconnect bus.

[0051] Upon receiving a power request, the charging control module controls the opening and closing of the first switch 31, second switch 32, third switch 33, and fourth switch 34, allocating the charging power of each power supply unit 21 to the corresponding charging terminal 1. The charging control module may include a processor and a memory. The memory stores corresponding switch switching rule programs, and the processor controls the switching of each switch according to these programs. The charging control module communicates with each charging terminal 1 via a CAN bus. The identification unit on the charging gun of the charging terminal 1 can also be a processor, which identifies and processes the power consumption of the device connected to the charging gun and sends the information to the charging control module. The charging control module then controls the opening and closing of the corresponding switches based on the current usage of the entire charging power cabinet to allocate the output power of different charging modules.

[0052] Reference Figure 1 When the two fast charging terminals P4 and P6 are charging the devices to be charged, the two power supply units 21 M8 and M10 directly supply power to P4 and P6 by closing the corresponding third switch 33. At the same time, according to the power demand of the devices to be charged connected to P4 and P6, for example, the power demand of P4 is 80kW and the power demand of P6 is 40kW, P6 can be directly powered by M10 without any allocation. However, P4 needs to allocate an additional power supply unit 21 to meet the power demand. For example, if P3 is idle at this time, the first switch 31 between L7 and L8 can be directly closed, and the third switch 33 on L7 can be turned off, thereby allocating the power of M7 to L8.

[0053] If the supercharging terminal S1 is used by a newly entered device, the two power supply units 21, M1 and M5, will supply power to S1 by closing the corresponding third switch 33. Alternatively, combinations of M1 and M2, or M4 and M5, can also be used. Simultaneously, if the power demand of S1 is 160kW, the first switches 31 between L1 and L2, and between L4 and L5, can be closed to provide sufficient output power to S1.

[0054] Furthermore, if all the fast charging terminals P2 to P4 and P6 to P8 are occupied at this time, or if the power of the corresponding power supply unit 21 is allocated to other fast charging terminals, and the power demand of S1 increases to 200kW, then the power of M9 can be directly allocated to L1 by closing the fourth switch 34 between L1 and L9 to meet the power demand of S1.

[0055] It is worth noting that when an output bus 30 wants to call an idle power supply unit 21, if it can be directly connected to the output bus corresponding to the power supply unit 21 through the first switch 31, the second switch 32, or the fourth switch 34, then its power switching speed is relatively fast. This is because, at this time, as long as the output voltage of the power supply units corresponding to the two directly connected output buses is approximately equal, the voltage of the two output buses can be approximately equal, so that the voltage on both sides of the corresponding switch is approximately equal, and the corresponding switch can be closed.

[0056] However, if the power supply units corresponding to the output buses 30 that are not directly connected to each other are to be called, the power switching speed will be slow. This is because, in addition to these two non-directly connected output buses, it is also necessary to ensure that the voltage of at least one other output bus located between them is approximately equal to theirs in order to close the corresponding switch. Therefore, it is inevitable that the output voltage of more power supply units needs to be modulated. As a switching power supply, the output voltage modulation process of the power supply unit 21 requires a certain amount of time, which results in the slow power switching speed and the more complex switching logic in this case.

[0057] Therefore, in the aforementioned switch switching rule procedure, the first switch 31, the second switch 32, or the fourth switch 34 connected to the output bus 30 is usually selected first to call the corresponding power supply unit on the directly connected output bus, achieving faster power switching. Only if this is still insufficient to meet the power requirements will other power supply units corresponding to non-directly connected output buses be considered for use.

[0058] Example 2:

[0059] Embodiment 2 of the present invention provides a charging system. The difference between this charging system and Embodiment 1 is that there is a difference in the circuit layout of the dual-purpose supercharging and fast charging power cabinet.

[0060] Reference Figure 2 The output buses 30 connected to S1, which serves as the supercharging terminal, are L1 and L4. L2 and L3 are disconnected buses and are not connected to charging terminal 1. In this circuit layout, there are two output buses 30, L6 and L11, separated from any supercharging bus or disconnected bus by a first switch 31 and not connected via a second switch 32. Therefore, L6 is connected to L1 via a fourth switch 34, and L11 is connected to L4 via the fourth switch 34. When the charging power cabinet is in use, if S1 is in use and has a high power demand, and the power of M5, M7 to M10 and M12 is all allocated, the power of M6 and M11 can be allocated to S1 by closing the fourth switch 34 between L1 and L6 and between L4 and L11.

[0061] Of course, it can also be seen that compared with Embodiment 1, Embodiment 2 requires an additional fourth switch 34, which increases the cost. In Embodiment 1, since the two disconnected buses L2 and L4 are not adjacent, but have an output bus L3, the first switch 31 connected to the disconnected bus is efficiently utilized, thereby reducing the need for the fourth switch 34. In addition, as long as the disconnected bus L2 or L4 is not used by the supercharging terminal S1, the corresponding power supply units M2 and M4 can be connected to the fast charging bus L3 through the corresponding first switch 31 to be quickly called by the fast charging terminal P1, or through the corresponding second switch 32 to be quickly called by the fast charging terminals P4 and P6 respectively.

[0062] In Embodiment 2, since the two disconnected buses L2 and L3 are adjacent to each other, the first switch 31 between them can only be used for power switching of the supercharging terminal, not for power switching of the fast charging terminal. The first switch 31 is not efficiently reused, so the two power supply units 21, M2 and M3, can only be quickly called by the fast charging terminal P4 or P5 respectively through the corresponding second switch 32. Once the supercharging terminal S1 is not used, the defects of Embodiment 2 become apparent: when there are few fast charging vehicles waiting to be charged, the power switching speed is reduced and the switching complexity is increased; when there are many fast charging vehicles waiting to be charged, it is even impossible to call the power supply units M2 and M3, directly reducing the ability of the power supply units M2 and M3 to be called by the fast charging terminal, resulting in poor flexibility.

[0063] Example 3:

[0064] Embodiment 2 of the present invention provides a charging system. The difference between this charging system and Embodiment 1 is that there is a difference in the circuit layout of the dual-purpose supercharging and fast charging power cabinet.

[0065] Reference Figure 2 The output buses 30 connected to S1, the supercharging terminal, are L1 and L4, while L2 and L5 are disconnected buses and are not connected to charging terminal 1. In this circuit layout, there is an output bus 30 called L9, which is separated from any supercharging bus or disconnected bus by a first switch 31 and is not connected via a second switch 32. Therefore, L9 is connected to L1 via a fourth switch 34. When the charging power cabinet is in use, if S1 is in use and has a high power demand, and the power of M3, M6 to M8, and M10 to M12 is all allocated, the power of M9 can be allocated to S1 by closing the fourth switch 34 between L1 and L9.

[0066] It can be seen that although Example 3 is the same as Example 2, both using L1 and L4 as the supercharging bus, since its disconnected buses L2 and L5 are not adjacent, it does not have the defects of Example 2.

[0067] Example 4:

[0068] Embodiment 2 of the present invention provides a charging system. The difference between this charging system and Embodiment 1 is that there is a difference in the circuit layout of the dual-purpose supercharging and fast charging power cabinet.

[0069] In the charging power cabinet provided by the present invention, two supercharging buses connected to the same supercharging terminal are grouped together. When the power distribution module 3 includes multiple groups of supercharging buses, each supercharging bus is connected to at least one fourth switch 34.

[0070] Specifically, refer to Figure 4 In embodiment 4, there are 16 power supply units 21, numbered M1 to M16, each with an output power of 40kW, resulting in a total output power of 640kW. Two supercharging terminals, S1 and S2, are provided. S1 connects to L1 and L4, and S2 connects to L9 and L12. L2 and L3 are disconnected buses near S1, and L10 and L11 are disconnected buses near S2. In this circuit layout, there are four output buses 30: L6, L7, L14, and L15. Each bus is separated from any supercharging bus or disconnected bus by a first switch 31 and is not connected via a second switch 32. Therefore, L6 is connected to L1 via a fourth switch 34, L7 to L4 via a fourth switch 34, L14 to L9 via a fourth switch 34, and L15 to L12 via a fourth switch 34. When using S1 and S2, M6, M7, M14 and M15 can be allocated to the corresponding supercharging terminal via the fourth switch 34.

[0071] The foregoing description of the specifications and embodiments is intended to explain the scope of protection of this invention, but does not constitute a limitation on the scope of protection of this invention. Modifications, equivalent substitutions, or other improvements to the embodiments of this invention or a portion thereof that can be obtained by those skilled in the art through logical analysis, reasoning, or limited experimentation, based on the teachings of this invention or the foregoing embodiments, in conjunction with common knowledge, general technical knowledge, and / or existing technology, should all be included within the scope of protection of this invention.

Claims

1. A dual-purpose charging power cabinet for supercharging and fast charging, which is suitable for connection to multiple charging terminals (1), wherein at least one of the multiple charging terminals (1) is a supercharging terminal and the rest are fast charging terminals; Its characteristics are, include: The power supply module (2), the power distribution module (3), and the charging control module; The power supply module (2) includes multiple power supply units (21) and is connected to the power distribution module (3); The power distribution module (3) includes an output bus (30) with the same number as the power supply units (21) and several switches; each output bus (30) is connected to each power supply unit (21) and the output bus (30) is adapted to be connected to the charging terminal (1); the output buses (30) are connected in series to form a ring topology through the first switch (31), and when the number of output buses (30) is even, another output bus (30) that is diagonally related to it is connected through the second switch (32); at the same time, the output bus (30) is connected to the corresponding charging terminal (1) through the third switch (33). The charging control module controls the opening and closing of each switch according to the power demand of the charging terminal (1) to allocate the required power to the charging terminal (1). in, Each of the fast charging terminals is connected to one of the output buses (30), which is a fast charging bus; each of the supercharging terminals is connected to two output buses (30), which are both supercharging buses; and, according to the bit order of all the output buses (30), the two supercharging buses connected to the same supercharging terminal do not include other supercharging buses, and the two supercharging buses have at least two output buses (30) when counted in the forward order.

2. The dual-purpose charging power cabinet for supercharging and fast charging as described in claim 1, characterized in that, Of the two output buses (30) adjacent to any of the supercharging buses, at least one output bus (30) is not connected to any of the charging terminals (1), and this output bus (30) is a disconnected bus.

3. The dual-purpose charging power cabinet for supercharging and fast charging as described in claim 2, characterized in that, It also includes at least one fourth switch (34); all output buses (30) that are separated from any supercharge bus or disconnect bus by at least one first switch (31) and are not connected through a second switch (32) are connected to any supercharge bus or disconnect bus through the fourth switch (34).

4. The dual-purpose charging power cabinet for supercharging and fast charging as described in claim 3, characterized in that, Two supercharging buses connected to the same supercharging terminal are grouped together. When the power distribution module (3) includes multiple supercharging buses, each supercharging bus is connected to at least one of the fourth switches (34).

5. A dual-purpose charging power cabinet for supercharging and fast charging as described in claim 4, characterized in that, In the power supply module (2), the number of power supply units (21) is N, where N≥a+b*4, a is the number of fast charging terminals, and b is the number of supercharging terminals.

6. The dual-purpose charging power cabinet for supercharging and fast charging as described in claim 5, characterized in that, The number of power supply units (21) is 12, and the number of charging terminals (1) is 9, of which the number of supercharging terminals is 1 and the number of fast charging terminals is 8.

7. A dual-purpose charging power cabinet for supercharging and fast charging as described in claim 6, characterized in that, In the bit order of all output buses (30), the supercharge bus is numbered 1 and 5, the disconnect bus is numbered 2 and 4, and the fourth switch (34) connects the output buses (30) numbered 1 and 9.

8. A charging system, characterized in that it comprises: Several charging terminals (1), including at least one supercharging terminal and the rest being fast charging terminals; and The dual-purpose supercharging and fast charging power cabinet as described in any one of claims 1-7 is connected to each of the charging terminals (1).

9. A charging system as described in claim 8, characterized in that, Each charging terminal (1) includes at least one charging gun. The charging guns are divided into supercharging guns and fast charging guns according to different charging power. The rated charging power of the supercharging gun is greater than that of the fast charging gun. The supercharging terminal includes only one supercharging gun, and the fast charging terminal includes at least one fast charging gun.

10. A charging system as described in claim 9, characterized in that, Each of the charging guns is equipped with an identification unit, which is used to identify the power required by the device to be charged and transmit it to the charging control module so that it can adjust the power required by the corresponding charging terminal (1).

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